my old asus board does this too after power has been off to the computer
it does it once or any time u update your bios it is writing the second bios
you guys are on about it doing it every time you power off, mine doesn't, it did it once and never again
Next time you shut down, turn it off at the wall or PSU afterwards, leave it a while and see if it does it again.
Also it's got nothing to do with the HDD light![]()
Mine did that when I flashed the Bios... thought I'd killed it![]()